This was a fun time travel episode, complete with period outfits and everything. The ending got a little strained, I would have preferred they just didn't have a ticking clock over a cringey, totally fake ticking clock. It's like, "Oh my God we gotta stop these time traveling aliens who have had, who knows how many millennia to time travel, in like the next five seconds or... well, let's just do it right away for no reason!"
Given that the whole plot overall also frequently lacks much meat-on-the-bone, I think it averages out with the fun and adventure to an 8/10.
Given that the whole plot overall also frequently lacks much meat-on-the-bone, I think it averages out with the fun and adventure to an 8/10.